We were meant to get married this coming May but because of tbe pandemic we had to postpone our wedding. I have always wanted to get married in May and so we looked into the possibilities of marrying in May 2022. Our venue only gave us availabilities in May. The problem was that my fiance s sister is also getting married in May 2022 and now we are just 1 week apart; ours before theirs. When my fiance told them about this they became angry, verbally violent and threatened that unless we get married on a weekday (it is not popular over here), or in July/August (again it is too hot to get married and my fiance wont feel comfortable) or May 2023 they wont be coming to our wedding. We only postponed because of covid as otherwise we both wish to get married this year as was originally planned. His parents arent helping us financially and arent helping with the wedding planning. Moreover relatives do not have travelling costs as we all live close to each other. We also informed them that we will accept not inviting extended family or extended family friends to our wedding if they prefer to have them only for the sister s wedding. They made us feel as if we shouldn't have the wedding we planned and paid for. They are not talking to each other and even when my fiance had to go to the hospital for an emergency they didnt come or ask him what has happenend. What are your thoughts?